Analysis of results of ultrasound examination of thyroid nodules in nuclear power workers / 中华劳动卫生职业病杂志

Objective@#To investigate the detection of thyroid nodules and related risk factors in nuclear power workers, and to provide scientific evidence for thyroid protection of nuclear power workers.@*Methods@#In December 2018, select 295 workers of a nuclear power production enterprise and 238 administrative staff of it, and select 250 staff members of a thermal power generation enterprise 70 kilometers away from the nuclear power station to conduct thyroid ultrasound examination and questionnaire survey for single factor. Analysis and further multivariate logistic regression analysis were used to study the risk factors of thyroid nodules in the population.@*Results@#Women and smoking history were independent risk factors for the increased incidence of thyroid nodules in the study population; three shifts work pattern was an independent risk factor for the increased prevalence of thyroid nodules in nuclear power workers (P<0.05) , and other factors such as the history of nuclear exposure had no significant correlation with thyroid nodules (P>0.05) .@*Conclusion@#Nuclear exposure has little effect on the prevalence of thyroid nodules in nuclear power workers.

Consistencyanalysisofpreoperativeultrasoundand MSCTindiagnosing microvascularinvasioninhepatocellularcarcinoma / 实用放射学杂志

Objective Toinvestigatetheconsistencyofultrasoundand MSCTindiagnosing microvascularinvasion (MVI)in hepatocellularcarcinoma,andtocomparethediagnosticefficiencyofbothtwomethods.Methods TheultrasoundandMSCTdataof 82patientswithhepatocellularcarcinomawerecollected.Accordingtothepostoperativepathologicalresults,theconsistencyanddiagnostic efficiencyofultrasoundandMSCTindiagnosingMVIinhepatocellularcarcinomawerecompared.Results Accordingtothepostoperative pathologicalfindingsof82patients,30caseswerepositiveofMVI,while52caseswerenegative.ThepreoperativeMSCTandultrasound examinations had a strong consistency (Cohen’s Kappa＝0.829 ,P＜0.001 ).The sensitivity ,specificity and accuracy of preoperative ultrasoundinpredictingtheMVIinhepatocellularcarcinomawere76.67% (23/30),67.31% (35/52)and70.73% (58/82),respectively. Thesensitivity,specificityandaccuracyofpreoperativeMSCTinpredictinghepatocellularcarcinomaMVIwere83.33% (25/30),73.08%(38/52)and75.61% (63/82),respectively.Conclusion Preoperativeultrasoundand MSCThavegoodconsistencyandhighdiagnostic efficiencyindiagnosing MVIinhepatocellularcarcinoma.

Ultrasonic Elastography Strain Rate Ratio Combined with MRI in Diagnosis of Breast Tumor / 中国医学影像学杂志

PurposeTo evaluate the significance of ultrasonic elastography strain ratio, MRI and the combination of both in diagnosis of breast tumor.Materials and MethodsFifty-four cases with single breast tumor underwent preoperative ultrasound elasticity imaging and MRI. Accuracy of ultrasound elastography strain rate ratio (SRR) of the tumor and surrounding normal breast tissue was measured by quantitative ultrasound elastography, and its combination with MRI were analyzed. ResultsThere was signiifcant differences on SRR between the benign group and the malignant group (2.24±1.28vs 4.96±1.73, t=2.648,P0.05). Combined both had higher diagnosis accuracy when compared with SR and MRI separately (χ2=6.000 and 3.967,P<0.05).Conclusion Ultrasonic elastography strain ratio is accurate and objective in differentiating benign from malignant breast tumors. It is a valuable quantitative index in clinical practice. Moreover, SRR combined with MRI can reduce the misdiagnosis rate.